Home > Analysis: 3811 Sunrise Dr #11, La Porte, TX 77571 08/01/2025

📊 Environmental Assessment Report

This comprehensive report analyzes both flood risk and industrial pollution exposure for this property. The assessment combines multiple data sources including USGS elevation, FEMA flood zones, historical storm modeling, and EPA Toxic Release Inventory records.

🌊 Part 1: Flood Risk Analysis

Property Overview

This section shows the fundamental characteristics of the property, including its elevation above sea level, FEMA flood zone designation, and our calculated overall flood risk rating based on historical data and topographic analysis.

Address

3811 SUNRISE DR 11 LA PORTE 77571

Building Size

1,408 sqft

Total structure area from HCAD building records.

Elevation

11.21 ft

Height above sea level from USGS data.

FEMA Flood Zone

High Risk - 1% annual chance with established base flood elevation

Overall Risk

Moderate

Risk based on FEMA zone and simulation.

Risk Assessment Outputs

These detailed metrics show the technical outputs from our flood risk model. They include predicted water depths at the property during a 5000-year flood event and estimated flood damage based on USACE methodology.

Risk Rating

Moderate

Flood Depth

0 ft ±0.5 ft

No flooding at current water level.

Water Surface Elevation (WSE)

N/A

Water surface elevation data not available.

Area Inundated

N/A

Data not available

Nearest Bayou Stage

N/A

No nearby bayou within monitoring range

Depth-Damage Estimate (HCAD Valuation)

Property not flooded at current water level. No damage to calculate.

Depth-Damage Estimate (Neighborhood Comparison)

Property not flooded at current water level. No damage to calculate.

Analysis Method

COG Bathtub Model

Raster-based flood inundation query

Flood Simulation

This simulation shows whether the property would flood based on a 5000-year flood event with 3m (9.84ft) water level. Use the interactive tool to explore different scenarios.

✅ Property Would Be Safe

Safety Margin: 1.21 feet
Severity: Safe

Adjust Flood Simulation

The analysis above uses default settings (5000-year flood, 3m/9.84ft water level). To explore different flood scenarios with interactive maps, return to the main tool:

Open Interactive Analysis Tool

Flood Risk Recommendations

Based on the property's flood risk profile, here are specific action items to consider.

This property is in a high-risk flood zone. Flood insurance is required for mortgages.
Consider flood mitigation measures like elevated utilities and flood vents.
Review the interactive flood simulator to understand how different rainfall events could affect this property.
Contact Harris County Flood Control District (HCFCD) for drainage projects and flood information.

🏭 Part 2: Industrial Pollution Exposure

Property Pollution Ranking

High

Higher pollution than 79% of Houston homes

This ranking compares pollution levels within 2 miles of this property against 10,000 randomly sampled Houston metro properties. Lower percentiles indicate higher pollution exposure.

Industrial Pollution Nearby (Last 10 Years)

785 thousand lbs

Extremely High

120.4x more than typical Houston property
≈ 39 dump trucks of chemicals within 2 miles

Total chemical releases from all industrial facilities within a 2-mile radius over the past decade (2014–2024). Data from EPA's Toxic Release Inventory tracking air, water, and land discharges.

💨 Air Pollution (Last 10 Years)

785 thousand lbs

Extremely High

162.8x more than typical Houston property

Chemicals released into the air from nearby facilities over 10 years. Includes both fugitive emissions (leaks, evaporation) and stack emissions (smokestacks, vents). May affect local air quality.

💧 Water Pollution (Last 10 Years)

141 lbs

High

Chemical discharges to surface water (bayous, streams, drainage) from industrial facilities within 2 miles over the past decade. May impact local waterways and drainage systems.

❤️ Why It Matters

High chemical activity nearby can indicate industrial zones, truck traffic, or potential odor and noise issues. These factors may affect air quality, long-term property desirability, and neighborhood character. This data helps you understand the industrial footprint around your property.

🏙️ Houston Metro Benchmarks

Comparison with typical Houston properties (based on 10,000 randomly sampled homes). All measurements are for chemicals released within a 2-mile radius.

Period	Total	Air	Water
Typical Houston Property (2014-2024)	6,524 lbs	4,822 lbs	0 lbs
This Property (2014-2024)	785,347 lbs	785,206 lbs	141 lbs
Typical Houston Property (2024 Only)	2 lbs	1 lbs	0 lbs
This Property (2024 Only)	274,283 lbs	53,741 lbs	46 lbs

📊 How This Property Compares to Houston Metro

Based on a random sample of 10,000 Houston properties, this chart shows the distribution of pollution levels across the metro area. The highlighted bar indicates where this property falls compared to other homes. Lower percentiles mean higher pollution exposure.

0-9thMost Polluted

9.9%

10-19th

10.1%

20-29th

9.9%

30-39th

10.1%

40-49th

9.7%

50-59th

10.2%

60-69th

70-79th

5.8%

80-89th

4.3%

90-100thLowest Pollution

34.2%

Higher pollution than 79% of Houston homes

Each bar's width represents the percentage of Houston homes in that pollution range. This property ranks in the 20-29th percentile (top 25% most polluted).

Top chemicals released near this property (past 10 years):

Acrylic acid, Benzene, Cyclohexane, Methanol, Ethylbenzene

View the full list of 25 chemicals below.

Chemicals Released (2014-2024, 10-Year Total) (25 chemicals)

#	Chemical	CAS#	Air (lbs, 10yr)	Water (lbs, 10yr)	Total (lbs, 10yr)
1	Acrylic acid	79-10-7	247,770	0	247,770
2	Benzene	71-43-2	115,467	0	115,467
3	Cyclohexane	110-82-7	102,600	0	102,600
4	Methanol	67-56-1	97,062	0	97,062
5	Ethylbenzene	100-41-4	65,946	0	65,946
6	Styrene	100-42-5	51,437	0	51,437
7	Ammonia	7664-41-7	17,698	0	17,698
8	Isoprene	78-79-5	15,828	0	15,828
9	Propylene	115-07-1	15,687	0	15,687
10	Ethylene	74-85-1	15,437	0	15,437
11	1,3-Butadiene	106-99-0	14,544	0	14,544
12	Toluene	108-88-3	8,313	0	8,313
13	Trade Secret	TRD SECRT	5,905	88	5,993
14	Formaldehyde	50-00-0	2,450	0	2,450
15	Formic acid	64-18-6	1,996	0	1,996
16	Acrylonitrile	107-13-1	1,977	0	1,977
17	Butyl acrylate	141-32-2	1,939	0	1,939
18	n-Hexane	110-54-3	1,735	0	1,735
19	Maleic anhydride	108-31-6	534	0	534
20	Acrolein	107-02-8	402	0	402
21	Hydroquinone	123-31-9	355	0	355
22	Zinc compounds	N982	35	33	68
23	Xylene (mixed isomers)	1330-20-7	65	0	65
24	Antimony compounds	N010	20	15	35
25	Antimony And Antimony Compounds	N010	5	5	10

Top chemicals released near this property (2024 only):

Acrylic acid, Nickel compounds, Cyclohexane, Styrene, Benzene

View the full list of 22 chemicals reported within 2 miles for 2024.

Chemicals Released (2024 Only) (22 chemicals)

#	Chemical	CAS#	Air (lbs/yr)	Water (lbs/yr)	Total (lbs/yr)
1	Acrylic acid	79-10-7	20,841	0	124,064
2	Nickel compounds	N495	0	0	74,741
3	Cyclohexane	110-82-7	8,060	0	29,370
4	Styrene	100-42-5	3,598	0	17,737
5	Benzene	71-43-2	8,393	0	8,949
6	Ethylbenzene	100-41-4	3,948	0	5,723
7	Isoprene	78-79-5	2,125	0	2,125
8	Propylene	115-07-1	2,003	0	2,003
9	n-Hexane	110-54-3	160	0	1,995
10	Formic acid	64-18-6	175	0	1,197
11	1,3-Butadiene	106-99-0	1,187	0	1,187
12	Acrylonitrile	107-13-1	879	0	1,029
13	Toluene	108-88-3	525	0	957
14	Butyl acrylate	141-32-2	848	0	848
15	Ethylene	74-85-1	741	0	741
16	Formaldehyde	50-00-0	151	0	672
17	Trade Secret	TRD SECRT	0	46	581
18	Hydroquinone	123-31-9	23	0	185
19	Ethylene glycol	107-21-1	0	0	85
20	Acrolein	107-02-8	28	0	38
21	Methanol	67-56-1	30	0	30
22	Maleic anhydride	108-31-6	26	0	26